Weather on September 21 at Lake Clark
Lake Clark National Park and Preserve
Based on 29 years of data from Anchorage, AK
Planning Your Visit
September 21st in Lake Clark National Park (via Anchorage, AK) typically brings cool fall weather, with average highs around 55°F and lows near 41°F. Over 29 years of records, the warmest September 21st was in 2000 (58°F average), while the coldest was 2013 (40°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 62% of September 21st dates historically, with the wettest September 21st recording 1.27" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 21st in Lake Clark? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 55°F | 49°F | 0.84" | -- |
| 2024 | 54°F | 38°F | 0" | -- |
| 2023 | 53°F | 42°F | 0.33" | -- |
| 2022 | 51°F | 43°F | 0.05" | -- |
| 2021 | 47°F | 36°F | 0" | -- |
| 2020 | 53°F | 39°F | 0" | -- |
| 2019 | 52°F | 42°F | 0.03" | -- |
| 2018 | 59°F | 46°F | 0.58" | -- |
| 2017 | 47°F | 43°F | 0.84" | -- |
| 2016 | 62°F | 48°F | 0.08" | -- |
| 2015 | 54°F | 31°F | 0" | -- |
| 2014 | 57°F | 45°F | 0.03" | -- |
| 2013 | 47°F | 33°F | 0" | -- |
| 2012 | 59°F | 41°F | 0.36" | -- |
| 2011 | 57°F | 40°F | 0.05" | -- |
| 2010 | 56°F | 45°F | 0" | -- |
| 2009 | 50°F | 41°F | 0.25" | -- |
| 2008 | 53°F | 40°F | 0" | -- |
| 2007 | 55°F | 43°F | 0.23" | -- |
| 2006 | 56°F | 39°F | 0.08" | -- |
| 2005 | 56°F | 39°F | 0.15" | -- |
| 2004 | 54°F | 38°F | 0" | -- |
| 2003 | 51°F | 35°F | 0" | -- |
| 2002 | 57°F | 30°F | 0" | 0" |
| 2001 | 60°F | 37°F | 0" | 0" |
| 2000 | 69°F | 46°F | 0.91" | -- |
| 1999 | 53°F | 45°F | 0.46" | 0" |
| 1998 | 58°F | 42°F | 0.03" | 0" |
| 1971 | 52°F | 46°F | 1.27" | 0" |